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首页> 外文期刊>Environmental Pollution >Polybrominated diphenyl ethers in surface sediments of the Yangtze River Delta: Levels, distribution and potential hydrodynamic influence
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Polybrominated diphenyl ethers in surface sediments of the Yangtze River Delta: Levels, distribution and potential hydrodynamic influence

机译：长江三角洲表层沉积物中的多溴联苯醚：含量，分布和潜在的水动力影响

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摘要

A total of 32 surface sediments collected from the Yangtze River Estuary, Hangzhou Bay and the Qiantang River were analyzed for polybrominated diphenyl ethers (PBDEs). The concentrations of Sigma PBDEs (sum of 12 PBDE congeners without BDE 209) and BDE 209 varied from n.d. to 0.55 and from 0.16 to 94.6 ng/g, respectively. The spatial variability of :PBDEs concentrations indicated that waste discharge from the urban areas might been the main source of PBDEs in the Yangtze River Delta. BDE 209 was the predominant congener (similar to 90-100%) detected among the 13 congeners, consistent with the fact that technical deca-BDE mixtures are presently the dominant technical PBDE mixtures used in China. Compared to published data acquired from other locales, PBDE congeners with less than four bromines were more abundant in the present study area. The hydrodynamic conditions may likely be a significant factor in dictating the observed levels and congener distribution patterns of PBDEs. (c) 2006 Elsevier Ltd. All rights reserved.
机译：分析了从长江口，杭州湾和钱塘江收集的总共32种表面沉积物的多溴联苯醚（PBDEs）。 Sigma PBDEs（不含BDE 209的12个PBDE同系物的总和）和BDE 209的浓度从n.d.开始变化。分别降至0.55和0.16至94.6 ng / g。 ：PBDEs浓度的空间变异性表明，城市地区的废物排放可能是长三角地区PBDEs的主要来源。 BDE 209是13个同类物中检测到的主要同类物（大约90-100％），这与以下事实相符：工业十溴二苯醚混合物目前是中国使用的主要工业PBDE混合物。与从其他地区获取的公开数据相比，本研究区域中溴含量少于四个的多溴二苯醚同系物更为丰富。流体动力学条件可能是决定多溴二苯醚水平和同类分布模式的重要因素。 （c）2006 Elsevier Ltd.保留所有权利。

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